Fallos del tipo CWE-476

2328 resultados

Desreferência de ponteiro nulo autenticada remota

A aplicação tenta acessar um objeto ou endereço de memória que não foi inicializado ou foi definido como nulo, sem verificar essa condição antes. Um atacante autenticado consegue provocar esse acesso inválido enviando dados malformados ou inesperados, causando crash ou comportamento indefinido.

Ejemplo

Um endpoint autenticado de API recebe um ID de usuário, faz uma busca no banco que retorna nulo (usuário não existe) e tenta acessar diretamente campos desse objeto nulo sem validação — resultando em erro 500 ou travamento da aplicação.

Cómo mitigar

Sempre verificar se um objeto é nulo antes de usá-lo; usar análise estática (linters, SAST) para detectar acessos potenciais a nulos; validar e tratar casos onde dados esperados podem estar ausentes, mesmo que o usuário esteja autenticado.

CVE-2022-1674MEDIUMNULL Pointer Dereference in function vim_regexec_string at regexp.c:2733 in vim/vimEPSS 1.5%CVE-2017-2635HIGHA NULL pointer deference flaw was found in the way libvirt from 2.5.0 to 3.0.0 handled empty drives. A remote authenticated attacker could uEPSS 1.5%CVE-2025-8175HIGHD-Link DI-8400 jhttpd usb_paswd.asp null pointer dereferenceEPSS 1.5%CVE-2024-7006HIGHLibtiff: null pointer dereference in tif_dirinfo.cEPSS 1.5%CVE-2022-0696MEDIUMNULL Pointer Dereference in vim/vimEPSS 1.5%CVE-2020-3407HIGHCisco IOS XE Software RESTCONF and NETCONF-YANG Access Control List Denial of Service VulnerabilityEPSS 1.5%CVE-2021-27631HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%CVE-2021-27607HIGHSAP NetWeaver ABAP Server and ABAP Platform (Dispatcher), versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.2EPSS 1.5%CVE-2021-27630HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%CVE-2021-27632HIGHSAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC -EPSS 1.5%CVE-2025-53716MEDIUMWindows Local Security Authority Subsystem Service (LSASS) Denial of Service VulnerabilityEPSS 1.5%CVE-2022-24736LOWA Malformed Lua script can crash RedisEPSS 1.5%CVE-2022-2547HIGHSofting Secure Integration Server NULL Pointer DereferenceEPSS 1.5%CVE-2022-47015MEDIUMMariaDB Server before 10.3.34 thru 10.9.3 is vulnerable to Denial of Service. It is possible for function spider_db_mbase::print_warnings toEPSS 1.5%CVE-2022-2337HIGHSofting Secure Integration Server NULL Pointer DereferenceEPSS 1.5%CVE-2019-3840MEDIUMA NULL pointer dereference flaw was discovered in libvirt before version 5.0.0 in the way it gets interface information through the QEMU ageEPSS 1.5%CVE-2023-27787HIGHAn issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the parse_list function at the list.c:81 endpoinEPSS 1.5%CVE-2023-27785HIGHAn issue found in TCPreplay TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the parse endpoints function.EPSS 1.5%CVE-2023-27786HIGHAn issue found in TCPprep v.4.4.3 allows a remote attacker to cause a denial of service via the macinstring function.EPSS 1.5%CVE-2023-27784HIGHAn issue found in TCPReplay v.4.4.3 allows a remote attacker to cause a denial of service via the read_hexstring function at the utils.c:309EPSS 1.5%